Light brown or black stains (medium consistency) = engine oil

Reddish/light brown/black (thinner or thicker consistency) found near center of car = transmission

Reddish/light brown or Light Green (thin consistency) = power steering
system (use ATF in BMWs or Pentosin CHF 11 S hydraulic fluid in cars with rear self leveling)

Clear/Slightly Brown and slick (medium consistency) = brake fluid
Reddish/light brown/black (thick consistency) found at rear of car = differential fluid

Yellow/Green/ Pink/ BMW Blue and slimy (thin consistency) = coolant
Clear shiny liquid (thin consistency) = water (AC drainage)

Clear/Yellow (thin consistency) smells like urine = pee (probably from your pet, rodent, or teen-ager/friend/neighbor that got drunk the night before)

If I forgot one...feel free to add or correct.

Written by: QSilver7